import re

from django.contrib.auth.backends import ModelBackend

from users.models import User


def jwt_response_payload_handler(token,user = None,request =None):
    """
       自定义jwt认证成功返回数据
       """

    return {
        'token':token,
        'user_id':user.id,
        'username':user.username
    }

def get_user_by_count(account):
    """根据用户输入 账号 来后去用户登录对象
        """
    try:
        if re.match(r'^1[3-9]\d{9}$',account):
            user = User.objects.get(mobile = account)
        else:
            user = User.objects.get(username = account)
    except User.DoesNotExist:
        return None

    else:
        return user


class UsernameMobileAuthBackend(ModelBackend):
    """
        自定义用户名或手机号认证
        """
    def authenticate(self, request, username=None, password=None, **kwargs):
        # 获取user 对象
        user = get_user_by_count(username)
        if user is not None and user.check_password(password):
            return user
